<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>矩形计算器</title>
  <link rel="stylesheet" href="./layout.css"/>
</head>
<body>
  <div id="main">
    <label>宽度:</label>
    <input type="text" id="width"/>
    <span>*</span><br>
    <div id="addWidth"></div>

    <label>高度:</label>
    <input type="text" id="height"/>
    <span>*</span><br>
    <div id="addHeight"></div>

    <input type="button" id="calc" value="计算"/><br>
    <label>周长:<label>
    <input type="text" id="perimeter" disabled/><br>
    <label>面积:</label>
    <input type="text" id="area" disabled/>
  </div>

  <script src="//apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
  <script src="./main.js"></script>
 
</body>
</html>
